To solve this question, the user needs to understand the concept of computer networking.

A home computer network is a collection of computing devices in a residential setting that are connected to each other using a wired or wireless network.

Now, let's go through each option and explain why it is right or wrong:

A. LAN: This option is correct. LAN stands for Local Area Network, which is a type of computer network that covers a small geographic area, such as a home, office, or small group of buildings. A home computer network is an example of a LAN.

B. MAN: This option is incorrect. MAN stands for Metropolitan Area Network, which is a type of computer network that covers a larger geographic area than a LAN but smaller than a WAN. A MAN is typically used to connect multiple LANs within a metropolitan area.

C. SAN: This option is incorrect. SAN stands for Storage Area Network, which is a specialized, high-speed network that provides block-level access to data storage. A SAN is typically used in business environments to provide centralized storage for large amounts of data.

D. WAN: This option is incorrect. WAN stands for Wide Area Network, which is a type of computer network that covers a large geographic area, such as a country, continent, or even the entire world. WANs are typically used to connect LANs or MANs that are located in different geographic regions.

The Answer is: A (LAN)